Projectile fob use against submarines and submerged mines



A. J. STONE.

'PROJECTILE FOR use AGAINST SUBMARINES AND SUBMERGED MINES.

APPLICATION FILED JULY 3. I911.

'Patented May 13, 1919.

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PROJEGTILE FOR USE AGAINST SUIBMARINES AND SUBMERGED MINES.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed July 3, 1817. Serial No. 178,878.

To all whom it may concern:

Be it known that I, ANDREW JAoKsoN STONE, a citizen of the United States, residing at New London, in the county of New London and State of Connecticut, have invented certain new and useful Improvements in Projectiles for Use Against Submarine and Submerged Mines; and I do hereby declare the .following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ippertains to make and use the sanie.

y invention relates to im rovements 1n projectiles for use against su marines and submerged mines, and is intended more especiall to provide a rojectile which may be fire from overhead or at an angle from the vertical, and which will continue its travel through the water in substantially the direction (if its flight through the air. It is well known that when ogival or pointed projectiles are fired or dropped in the waterfro'm any height, that the path after reaching the water cannot be calculated with any great accuracy, as the projectile tends to diverge from its original path assoon as it strikes the water, and'the direction of deflection isvery uncertain and cannot be foreseen. g

I have found, by usmg'a pro ectile of subectile be ,dropped or fired in a vertical, onapproximate y vertical direction in the water, it,will continue in substantially the same direction after strikin the water as jectiles are especially adapted to be fired 0m aero-, planes with us of the non-recoil t e, shown in the patents to Cleland Davis, os. 1,108,715 and 1,108,716, granted August 25, 1914, and entitled Apparatus for firing projectiles from aircraft.

My invention will be understood by reference to the accompanying drawings, in

which:

Figure 1 shows a sectional elevation of a solid shot, constructed according to my invention; and v Fig. 2.show's a-sectional elevation through an explosive shell, constructed in accordance with .my invention.

Referring firstto' Fig. 1, A representsthe shell body A".

body of the projectile, provided with the usual rifling band B; this body maybe madev of any suitable metal, such as cast iron or steel, and is provided with a cap C of hard. steel,.which is shrunk or screwed onto the body of the projectile, and is .preferably cupped, as at 1. 4

This cap may be provided with a series of relief openings 2, so as to permit the passage of air or water therethrough, which will tend to relieve the head pressure on the projectile,

and the same will also tend to assist in direct.-

rotary motion will cause these teeth to saw a circular hole in the deck plating and tomore readily cut through'the same; but .if

suflicient velocity is, imparted to the projectile these teeth may not be necessary.

In the form of device shown in Fig. 1, the cap is shrunk onto the body of the projectile, and in the form shown in Fig. 2, the cap is screwed onto the body of the rojectile, and a suitable fuse D'is provide to explode the burstin charge E contained in the n this form of the cap the teeth are shown as omitted from the cutting 'ed e 4.

f desired, the cutting edge of the cap 0 may be especially hardened as by carburiz- 1n the same with acetylene gas, or in any other convenient way. I 1 a I I. do not mean to limit the invention to the particular form of ca as the shape of the same may be change in various ways without. departing from the spirit of my in- Vention. I Y Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States is:

.A projectile of the character described,

comprisin a cylindrical bod' portion and a, cylindrica cap of hard 'stee secured to the head thereof, the said ca being cup and provided with a dentate cutting e go, and em'g also provided with passages openin rearward and outward from said cup-shaped portion, substantiall as described. In tesiiikifirip wher I aflix my signature.

EW JEACKSON STONE. 

